// Run: dymola dymola-test.mo model kruhovy_test Real x; Real y(start=1); // pocatecni podminka Real err; equation der(x) = y; // x' = y der(y) = -x; // y' = -x err = x-sin(time); annotation (experiment(StopTime=20, NumberOfIntervals=5000)); end kruhovy_test;